Comet Ison
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Nasa craft spies 'the comet of the century'

A comet which could light up the skies over Earth in late 2013 has been filmed by Nasa's Deep Impact spacecraft, some 793 million km (493 million miles) away.

Comet Ison was only discovered in September 2012 by Russian astronomers, and it is expected to pass extremely close to the Sun in November.

The comet already has a 64,000km-long (almost 40,000 miles) tail of dust and gas that may become visible to the naked eye - possibly even in daylight - later in the year.

  • 06 Feb 2013